John schumacher and henry upjohn



@uiten taten atttt @ffice Letters .Patent No. 80,511, dated July28,1868.

IMPROVE-'JD MACHINE -FOB. PRESSING AND -GROOV-ING' SEAMS IN TINWARB.

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'.IO` ALL WHOM IT MAY CONOERN:

Beit known that we, JOHN SonUMAonssn and4 HENRY Unions, ot nn Arbor, inthe county of Washtenaw, and in the State of Michigan, have inventedcertain new and useful Improvements in Machines for Grooving andPressing Scams in Tin-Ware; and do hereby declare that the following isa full, clear, and exact description thereof, reference being had to theaccompanying drawings, and to the letters-of reference marked thereon.

In the annexed drawings, making part of this specification, A representsthe base of this machine, which may consist simply of a b-lock ofsufiicient size andweight to keep the machine steady in its place. Uponthis base is erectedha standard, B, which is'rnade of metal, and-divided'or' made double at its upper end. Projecting from' this standard aretwo arms, and D, said arms being. made` of metal, and placed parallel toeach other a suitable distance apart. Between these' two arms is placeda' rack-bar, E, with its teeth projecting downward.. This rack-bar ismoved by means `of a pinion, Gr, seen in dotted line, and secured upon ashaft which runs crosswise through the standard B. The shaft is providedwith a crank'fhandle, by means of which itis revolved, and the pinionrests between the two parts of the standard.

That end of the ba-r E which plays between the arms C and D, is -securedbetween two metalijaws, I I. These jaws embrace the arm D, and have abolt, e, passed through, above said arm, to secure them to it, and alsoto regulate the position olf the bar E. The jaws are to be perforatedwithiseveral holes, so that the' boli: can be shifted, in orderdto raiseor lower the bar E at pleasure.

Between thejaws I, andat the end of bar E, is secured a corrugatedroller, J. To the upper side of bar E, and above the roller J, issecured a strong spring, and to this spring is connected afriction-roller, a. The roller J plays, when' the machine is not in use,against the lower arm C, and the roller a plays :all the while againstthe arm D. v i

H represents a slotted gauge-plate, which is secured to. the side of thearm C, and which is capable of adjustment longitudinally upon said arm.

In'using this machine, the tin, lafter being lient in the usual mannerfor forminga joint, is placed with its joint upon the arm C, beneath thegroove or corrugation in the -roller J, the 4inner edge Vof the piecesof tin resting against the gauge H.. The-rack-bar E is then operated thepinion G, so that the roller J is passed over the seam enjoint. Theroller presses the groove in the joint'as it passes over it, beingpressed down firmly upon it by the spring upon the upper side of the'rackbar, and to which the frictionroller a is attached. The portion ofroller J', markedrx, presses the edge of the seam down. Y

The gauge H serves to regulate the distance which the tin passes overthe arm C, and also acts as a rest for its inneredge while it is beingoperated upon. i v

We arefully aware that the machine composed of the arms C D, rack-bar E,having a roller on its end, and operated substantially as herein setforth; 'is lnot newf Our invention only 'consists in the adjnstabilityof the rack-bar, the construction of the roller, and the addition of.the gauge.

Having thus fully described our nvention, what we claim as new, anddesire to secureby Letters Patent, is-

'lhe gauge H, used in combination with the arm C, as and, for thepurpose set forth.

In'testimony,thatwe claim the foregoing, wephave hereunto set ourhands,- this 25th day of'March, 1868.

` JoHNsonUMAoHnn,

HENRY UPJOHN.

Witnesses:

ZIM P. Kme, Tnnooonu Besseren.

